./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_stack-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_stack-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0a870e8a4a7dff1b238c9b19b47586f7abd44e3f0eb9969b7dad7bbd7f80e506 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:29:52,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:29:52,924 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:29:52,929 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:29:52,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:29:52,954 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:29:52,955 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:29:52,955 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:29:52,955 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:29:52,955 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:29:52,955 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:29:52,956 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:29:52,956 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:29:52,956 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:29:52,956 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:29:52,956 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:29:52,956 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:29:52,956 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:29:52,957 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:29:52,957 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:29:52,957 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:29:52,957 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:29:52,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:29:52,957 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:29:52,958 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:29:52,958 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:29:52,958 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:29:52,958 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:29:52,958 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:29:52,958 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:29:52,958 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:29:52,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:29:52,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:29:52,959 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:29:52,959 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:29:52,959 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:29:52,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:29:52,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:29:52,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:29:52,960 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:29:52,960 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:29:52,960 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:29:52,960 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:29:52,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:29:52,961 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:29:52,961 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:29:52,961 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:29:52,961 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:29:52,961 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a870e8a4a7dff1b238c9b19b47586f7abd44e3f0eb9969b7dad7bbd7f80e506 [2024-11-27 23:29:53,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:29:53,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:29:53,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:29:53,306 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:29:53,306 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:29:53,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/seq-pthread/cs_stack-2.i [2024-11-27 23:29:56,402 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/data/356af22fa/6917a9062af44c799b2999aeb5699e80/FLAG7963d8886 [2024-11-27 23:29:56,742 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:29:56,743 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/sv-benchmarks/c/seq-pthread/cs_stack-2.i [2024-11-27 23:29:56,761 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/data/356af22fa/6917a9062af44c799b2999aeb5699e80/FLAG7963d8886 [2024-11-27 23:29:56,782 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/data/356af22fa/6917a9062af44c799b2999aeb5699e80 [2024-11-27 23:29:56,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:29:56,786 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:29:56,787 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:29:56,788 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:29:56,792 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:29:56,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:29:56" (1/1) ... [2024-11-27 23:29:56,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20862d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:56, skipping insertion in model container [2024-11-27 23:29:56,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:29:56" (1/1) ... [2024-11-27 23:29:56,846 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:29:57,596 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/sv-benchmarks/c/seq-pthread/cs_stack-2.i[34556,34569] [2024-11-27 23:29:57,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:29:57,838 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:29:57,892 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/sv-benchmarks/c/seq-pthread/cs_stack-2.i[34556,34569] [2024-11-27 23:29:58,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:29:58,100 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:29:58,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:58 WrapperNode [2024-11-27 23:29:58,101 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:29:58,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:29:58,103 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:29:58,103 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:29:58,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:58" (1/1) ... [2024-11-27 23:29:58,152 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:58" (1/1) ... [2024-11-27 23:29:58,234 INFO L138 Inliner]: procedures = 252, calls = 297, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 648 [2024-11-27 23:29:58,235 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:29:58,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:29:58,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:29:58,236 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:29:58,248 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:58" (1/1) ... [2024-11-27 23:29:58,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:58" (1/1) ... [2024-11-27 23:29:58,272 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:58" (1/1) ... [2024-11-27 23:29:58,343 INFO L175 MemorySlicer]: Split 148 memory accesses to 18 slices as follows [2, 8, 8, 8, 0, 20, 12, 10, 6, 4, 2, 20, 6, 22, 8, 2, 4, 6]. 15 percent of accesses are in the largest equivalence class. The 51 initializations are split as follows [2, 3, 3, 3, 0, 6, 6, 2, 2, 2, 0, 10, 0, 10, 2, 0, 0, 0]. The 33 writes are split as follows [0, 2, 2, 2, 0, 8, 3, 3, 2, 0, 0, 0, 0, 6, 3, 0, 2, 0]. [2024-11-27 23:29:58,347 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:58" (1/1) ... [2024-11-27 23:29:58,348 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:58" (1/1) ... [2024-11-27 23:29:58,417 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:58" (1/1) ... [2024-11-27 23:29:58,419 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:58" (1/1) ... [2024-11-27 23:29:58,432 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:58" (1/1) ... [2024-11-27 23:29:58,450 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:58" (1/1) ... [2024-11-27 23:29:58,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:58" (1/1) ... [2024-11-27 23:29:58,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:29:58,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:29:58,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:29:58,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:29:58,487 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:58" (1/1) ... [2024-11-27 23:29:58,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:29:58,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:58,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:29:58,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:29:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 23:29:58,610 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 23:29:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 23:29:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2024-11-27 23:29:58,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2024-11-27 23:29:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 23:29:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 23:29:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-27 23:29:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-27 23:29:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-27 23:29:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-27 23:29:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-27 23:29:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-27 23:29:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-27 23:29:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-27 23:29:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-27 23:29:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-27 23:29:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-27 23:29:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-27 23:29:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-27 23:29:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2024-11-27 23:29:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#16 [2024-11-27 23:29:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#17 [2024-11-27 23:29:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 23:29:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-27 23:29:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-27 23:29:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-27 23:29:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-27 23:29:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-27 23:29:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-27 23:29:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-27 23:29:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-27 23:29:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-27 23:29:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-27 23:29:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-27 23:29:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-27 23:29:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-11-27 23:29:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-11-27 23:29:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-11-27 23:29:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2024-11-27 23:29:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#16 [2024-11-27 23:29:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#17 [2024-11-27 23:29:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2024-11-27 23:29:58,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2024-11-27 23:29:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 23:29:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 23:29:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 23:29:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-27 23:29:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-27 23:29:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-27 23:29:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-27 23:29:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-27 23:29:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-27 23:29:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-27 23:29:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-27 23:29:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-27 23:29:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-27 23:29:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-27 23:29:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-27 23:29:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-27 23:29:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-11-27 23:29:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2024-11-27 23:29:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 23:29:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 23:29:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 23:29:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-27 23:29:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-27 23:29:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-27 23:29:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-27 23:29:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-27 23:29:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-27 23:29:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-27 23:29:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-27 23:29:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-27 23:29:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-27 23:29:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-27 23:29:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-27 23:29:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-27 23:29:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-11-27 23:29:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2024-11-27 23:29:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure get_top [2024-11-27 23:29:58,625 INFO L138 BoogieDeclarations]: Found implementation of procedure get_top [2024-11-27 23:29:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:29:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 23:29:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 23:29:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-27 23:29:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-27 23:29:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-27 23:29:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-27 23:29:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-27 23:29:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-27 23:29:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-27 23:29:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-27 23:29:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-27 23:29:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-27 23:29:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-27 23:29:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-27 23:29:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-27 23:29:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2024-11-27 23:29:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#16 [2024-11-27 23:29:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#17 [2024-11-27 23:29:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2024-11-27 23:29:58,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2024-11-27 23:29:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2024-11-27 23:29:58,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2024-11-27 23:29:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-27 23:29:58,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-27 23:29:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-27 23:29:58,626 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-27 23:29:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2024-11-27 23:29:58,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2024-11-27 23:29:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:29:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 23:29:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 23:29:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 23:29:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-27 23:29:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-27 23:29:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-27 23:29:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-27 23:29:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-27 23:29:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-27 23:29:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-27 23:29:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-27 23:29:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-27 23:29:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-27 23:29:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-27 23:29:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-27 23:29:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-27 23:29:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-27 23:29:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:29:58,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:29:58,992 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:29:58,995 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:29:59,065 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-27 23:29:59,066 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);#res := 0; [2024-11-27 23:29:59,769 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##98: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);push_#res#1 := 0; [2024-11-27 23:29:59,769 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##99: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-27 23:29:59,769 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##59: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-27 23:29:59,769 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);pop_#res#1 := 0; [2024-11-27 23:29:59,769 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);pop_#res#1 := 0; [2024-11-27 23:29:59,770 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-27 23:29:59,770 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);pop_#res#1 := 0; [2024-11-27 23:29:59,770 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-27 23:29:59,770 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint L1002: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);pop_#res#1 := 0; [2024-11-27 23:29:59,770 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint L1002: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296));pop_#res#1 := 0; [2024-11-27 23:29:59,770 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint L986-4: SUMMARY for call __CS_cs(); srcloc: null [2024-11-27 23:29:59,771 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##114: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-27 23:29:59,771 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##113: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);push_#res#1 := 0; [2024-11-27 23:29:59,800 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint L930-1: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296); [2024-11-27 23:29:59,800 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint L930-1: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-27 23:29:59,800 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-27 23:29:59,801 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296); [2024-11-27 23:29:59,801 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296); [2024-11-27 23:29:59,801 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-27 23:29:59,801 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-27 23:29:59,801 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296); [2024-11-27 23:29:59,801 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint L930: SUMMARY for call __CS_cs(); srcloc: null [2024-11-27 23:30:04,330 INFO L? ?]: Removed 92 outVars from TransFormulas that were not future-live. [2024-11-27 23:30:04,330 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:30:04,362 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:30:04,362 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:30:04,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:30:04 BoogieIcfgContainer [2024-11-27 23:30:04,363 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:30:04,368 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:30:04,368 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:30:04,376 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:30:04,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:29:56" (1/3) ... [2024-11-27 23:30:04,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0d40d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:30:04, skipping insertion in model container [2024-11-27 23:30:04,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:58" (2/3) ... [2024-11-27 23:30:04,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0d40d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:30:04, skipping insertion in model container [2024-11-27 23:30:04,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:30:04" (3/3) ... [2024-11-27 23:30:04,381 INFO L128 eAbstractionObserver]: Analyzing ICFG cs_stack-2.i [2024-11-27 23:30:04,399 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:30:04,400 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG cs_stack-2.i that has 10 procedures, 218 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-27 23:30:04,475 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:30:04,490 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@244157d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:30:04,490 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:30:04,496 INFO L276 IsEmpty]: Start isEmpty. Operand has 218 states, 132 states have (on average 1.5227272727272727) internal successors, (201), 135 states have internal predecessors, (201), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-27 23:30:04,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-27 23:30:04,529 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:04,530 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:04,531 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:04,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:04,540 INFO L85 PathProgramCache]: Analyzing trace with hash -204109169, now seen corresponding path program 1 times [2024-11-27 23:30:04,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:04,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916458961] [2024-11-27 23:30:04,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:04,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-11-27 23:30:05,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:05,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916458961] [2024-11-27 23:30:05,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916458961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:30:05,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696053475] [2024-11-27 23:30:05,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:05,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:05,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:30:05,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:30:05,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:30:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:05,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:30:05,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:30:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-11-27 23:30:05,963 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:30:05,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696053475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:05,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:30:05,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 23:30:05,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193892071] [2024-11-27 23:30:05,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:05,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:30:05,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:05,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:30:05,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:30:05,994 INFO L87 Difference]: Start difference. First operand has 218 states, 132 states have (on average 1.5227272727272727) internal successors, (201), 135 states have internal predecessors, (201), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-27 23:30:06,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:06,072 INFO L93 Difference]: Finished difference Result 432 states and 765 transitions. [2024-11-27 23:30:06,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:30:06,074 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 94 [2024-11-27 23:30:06,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:06,086 INFO L225 Difference]: With dead ends: 432 [2024-11-27 23:30:06,087 INFO L226 Difference]: Without dead ends: 214 [2024-11-27 23:30:06,093 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:30:06,096 INFO L435 NwaCegarLoop]: 347 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:06,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:30:06,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-27 23:30:06,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2024-11-27 23:30:06,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 129 states have (on average 1.496124031007752) internal successors, (193), 131 states have internal predecessors, (193), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-27 23:30:06,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 343 transitions. [2024-11-27 23:30:06,161 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 343 transitions. Word has length 94 [2024-11-27 23:30:06,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:06,162 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 343 transitions. [2024-11-27 23:30:06,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-27 23:30:06,162 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 343 transitions. [2024-11-27 23:30:06,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-27 23:30:06,169 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:06,169 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:06,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:30:06,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 23:30:06,370 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:06,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:06,371 INFO L85 PathProgramCache]: Analyzing trace with hash -818590605, now seen corresponding path program 1 times [2024-11-27 23:30:06,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:06,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710071491] [2024-11-27 23:30:06,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:06,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:07,580 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-27 23:30:07,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:07,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710071491] [2024-11-27 23:30:07,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710071491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:07,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:30:07,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:30:07,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025653240] [2024-11-27 23:30:07,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:07,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:30:07,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:07,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:30:07,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:30:07,584 INFO L87 Difference]: Start difference. First operand 214 states and 343 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-27 23:30:07,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:07,706 INFO L93 Difference]: Finished difference Result 424 states and 689 transitions. [2024-11-27 23:30:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:30:07,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 94 [2024-11-27 23:30:07,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:07,718 INFO L225 Difference]: With dead ends: 424 [2024-11-27 23:30:07,718 INFO L226 Difference]: Without dead ends: 390 [2024-11-27 23:30:07,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:30:07,721 INFO L435 NwaCegarLoop]: 367 mSDtfsCounter, 302 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:07,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 1067 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:30:07,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-27 23:30:07,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 389. [2024-11-27 23:30:07,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 235 states have (on average 1.5319148936170213) internal successors, (360), 239 states have internal predecessors, (360), 135 states have call successors, (135), 18 states have call predecessors, (135), 18 states have return successors, (143), 135 states have call predecessors, (143), 135 states have call successors, (143) [2024-11-27 23:30:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 638 transitions. [2024-11-27 23:30:07,811 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 638 transitions. Word has length 94 [2024-11-27 23:30:07,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:07,812 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 638 transitions. [2024-11-27 23:30:07,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-27 23:30:07,812 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 638 transitions. [2024-11-27 23:30:07,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-27 23:30:07,822 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:07,822 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:07,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:30:07,823 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:07,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:07,823 INFO L85 PathProgramCache]: Analyzing trace with hash -624690417, now seen corresponding path program 1 times [2024-11-27 23:30:07,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:07,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519287735] [2024-11-27 23:30:07,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:07,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2024-11-27 23:30:09,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:09,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519287735] [2024-11-27 23:30:09,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519287735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:09,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:30:09,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:30:09,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651936745] [2024-11-27 23:30:09,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:09,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:30:09,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:09,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:30:09,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:30:09,141 INFO L87 Difference]: Start difference. First operand 389 states and 638 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-27 23:30:13,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:30:17,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:30:18,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:18,010 INFO L93 Difference]: Finished difference Result 825 states and 1352 transitions. [2024-11-27 23:30:18,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:30:18,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 173 [2024-11-27 23:30:18,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:18,027 INFO L225 Difference]: With dead ends: 825 [2024-11-27 23:30:18,027 INFO L226 Difference]: Without dead ends: 787 [2024-11-27 23:30:18,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:30:18,032 INFO L435 NwaCegarLoop]: 404 mSDtfsCounter, 388 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 38 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:18,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1465 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 105 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2024-11-27 23:30:18,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2024-11-27 23:30:18,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 779. [2024-11-27 23:30:18,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 470 states have (on average 1.5297872340425531) internal successors, (719), 481 states have internal predecessors, (719), 269 states have call successors, (269), 36 states have call predecessors, (269), 39 states have return successors, (303), 269 states have call predecessors, (303), 269 states have call successors, (303) [2024-11-27 23:30:18,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1291 transitions. [2024-11-27 23:30:18,253 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1291 transitions. Word has length 173 [2024-11-27 23:30:18,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:18,256 INFO L471 AbstractCegarLoop]: Abstraction has 779 states and 1291 transitions. [2024-11-27 23:30:18,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-27 23:30:18,256 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1291 transitions. [2024-11-27 23:30:18,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-27 23:30:18,271 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:18,271 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:18,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:30:18,272 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:18,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:18,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1398461820, now seen corresponding path program 1 times [2024-11-27 23:30:18,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:18,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984518968] [2024-11-27 23:30:18,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:18,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2024-11-27 23:30:19,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:19,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984518968] [2024-11-27 23:30:19,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984518968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:19,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:30:19,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:30:19,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744963830] [2024-11-27 23:30:19,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:19,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:30:19,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:19,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:30:19,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:30:19,389 INFO L87 Difference]: Start difference. First operand 779 states and 1291 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-27 23:30:23,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:30:27,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:30:28,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:28,356 INFO L93 Difference]: Finished difference Result 867 states and 1413 transitions. [2024-11-27 23:30:28,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:30:28,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 177 [2024-11-27 23:30:28,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:28,367 INFO L225 Difference]: With dead ends: 867 [2024-11-27 23:30:28,368 INFO L226 Difference]: Without dead ends: 795 [2024-11-27 23:30:28,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:30:28,371 INFO L435 NwaCegarLoop]: 392 mSDtfsCounter, 410 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 57 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:28,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 1416 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 104 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2024-11-27 23:30:28,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2024-11-27 23:30:28,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 779. [2024-11-27 23:30:28,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 470 states have (on average 1.5297872340425531) internal successors, (719), 481 states have internal predecessors, (719), 269 states have call successors, (269), 36 states have call predecessors, (269), 39 states have return successors, (301), 269 states have call predecessors, (301), 269 states have call successors, (301) [2024-11-27 23:30:28,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1289 transitions. [2024-11-27 23:30:28,539 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1289 transitions. Word has length 177 [2024-11-27 23:30:28,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:28,541 INFO L471 AbstractCegarLoop]: Abstraction has 779 states and 1289 transitions. [2024-11-27 23:30:28,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-27 23:30:28,541 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1289 transitions. [2024-11-27 23:30:28,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-27 23:30:28,558 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:28,558 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:28,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:30:28,558 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:28,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:28,559 INFO L85 PathProgramCache]: Analyzing trace with hash -238598727, now seen corresponding path program 1 times [2024-11-27 23:30:28,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:28,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377022833] [2024-11-27 23:30:28,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:28,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:29,464 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2024-11-27 23:30:29,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:29,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377022833] [2024-11-27 23:30:29,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377022833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:29,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:30:29,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:30:29,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459247535] [2024-11-27 23:30:29,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:29,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:30:29,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:29,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:30:29,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:30:29,467 INFO L87 Difference]: Start difference. First operand 779 states and 1289 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-27 23:30:33,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:30:37,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:30:38,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:38,533 INFO L93 Difference]: Finished difference Result 1547 states and 2542 transitions. [2024-11-27 23:30:38,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:30:38,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 173 [2024-11-27 23:30:38,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:38,546 INFO L225 Difference]: With dead ends: 1547 [2024-11-27 23:30:38,547 INFO L226 Difference]: Without dead ends: 772 [2024-11-27 23:30:38,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:30:38,555 INFO L435 NwaCegarLoop]: 392 mSDtfsCounter, 407 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 54 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:38,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1417 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 100 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2024-11-27 23:30:38,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2024-11-27 23:30:38,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 762. [2024-11-27 23:30:38,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 461 states have (on average 1.5227765726681128) internal successors, (702), 472 states have internal predecessors, (702), 261 states have call successors, (261), 35 states have call predecessors, (261), 39 states have return successors, (287), 262 states have call predecessors, (287), 261 states have call successors, (287) [2024-11-27 23:30:38,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1250 transitions. [2024-11-27 23:30:38,710 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1250 transitions. Word has length 173 [2024-11-27 23:30:38,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:38,711 INFO L471 AbstractCegarLoop]: Abstraction has 762 states and 1250 transitions. [2024-11-27 23:30:38,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-27 23:30:38,712 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1250 transitions. [2024-11-27 23:30:38,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-27 23:30:38,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:38,726 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:38,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:30:38,726 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:38,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:38,728 INFO L85 PathProgramCache]: Analyzing trace with hash -400210792, now seen corresponding path program 1 times [2024-11-27 23:30:38,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:38,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173891481] [2024-11-27 23:30:38,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:38,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:39,481 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2024-11-27 23:30:39,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:39,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173891481] [2024-11-27 23:30:39,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173891481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:30:39,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730858591] [2024-11-27 23:30:39,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:39,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:39,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:30:39,487 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:30:39,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:30:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:40,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 23:30:40,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:30:40,470 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 280 proven. 4 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2024-11-27 23:30:40,471 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:30:41,158 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2024-11-27 23:30:41,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730858591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:30:41,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:30:41,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2024-11-27 23:30:41,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539696814] [2024-11-27 23:30:41,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:30:41,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:30:41,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:41,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:30:41,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:30:41,164 INFO L87 Difference]: Start difference. First operand 762 states and 1250 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 9 states have call successors, (48), 5 states have call predecessors, (48), 6 states have return successors, (49), 7 states have call predecessors, (49), 9 states have call successors, (49) [2024-11-27 23:30:45,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:30:49,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:49,008 INFO L93 Difference]: Finished difference Result 1915 states and 3132 transitions. [2024-11-27 23:30:49,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:30:49,010 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 9 states have call successors, (48), 5 states have call predecessors, (48), 6 states have return successors, (49), 7 states have call predecessors, (49), 9 states have call successors, (49) Word has length 177 [2024-11-27 23:30:49,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:49,026 INFO L225 Difference]: With dead ends: 1915 [2024-11-27 23:30:49,026 INFO L226 Difference]: Without dead ends: 1157 [2024-11-27 23:30:49,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:30:49,034 INFO L435 NwaCegarLoop]: 312 mSDtfsCounter, 1115 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 742 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 742 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:49,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 1335 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [742 Valid, 1200 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2024-11-27 23:30:49,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2024-11-27 23:30:49,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1136. [2024-11-27 23:30:49,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 687 states have (on average 1.50509461426492) internal successors, (1034), 705 states have internal predecessors, (1034), 386 states have call successors, (386), 57 states have call predecessors, (386), 62 states have return successors, (427), 385 states have call predecessors, (427), 386 states have call successors, (427) [2024-11-27 23:30:49,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1847 transitions. [2024-11-27 23:30:49,173 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1847 transitions. Word has length 177 [2024-11-27 23:30:49,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:49,173 INFO L471 AbstractCegarLoop]: Abstraction has 1136 states and 1847 transitions. [2024-11-27 23:30:49,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 9 states have call successors, (48), 5 states have call predecessors, (48), 6 states have return successors, (49), 7 states have call predecessors, (49), 9 states have call successors, (49) [2024-11-27 23:30:49,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1847 transitions. [2024-11-27 23:30:49,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-27 23:30:49,186 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:49,186 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:49,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:30:49,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:49,390 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:49,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:49,391 INFO L85 PathProgramCache]: Analyzing trace with hash -2073129821, now seen corresponding path program 1 times [2024-11-27 23:30:49,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:49,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716159603] [2024-11-27 23:30:49,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:49,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2024-11-27 23:30:50,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:50,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716159603] [2024-11-27 23:30:50,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716159603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:50,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:30:50,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:30:50,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613742296] [2024-11-27 23:30:50,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:50,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:30:50,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:50,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:30:50,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:30:50,373 INFO L87 Difference]: Start difference. First operand 1136 states and 1847 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-27 23:30:54,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:30:58,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:30:59,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:59,476 INFO L93 Difference]: Finished difference Result 1560 states and 2491 transitions. [2024-11-27 23:30:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:30:59,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 173 [2024-11-27 23:30:59,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:59,489 INFO L225 Difference]: With dead ends: 1560 [2024-11-27 23:30:59,490 INFO L226 Difference]: Without dead ends: 1047 [2024-11-27 23:30:59,494 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:30:59,495 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 423 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 86 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:59,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1072 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 310 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2024-11-27 23:30:59,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2024-11-27 23:30:59,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1034. [2024-11-27 23:30:59,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 628 states have (on average 1.4856687898089171) internal successors, (933), 643 states have internal predecessors, (933), 344 states have call successors, (344), 57 states have call predecessors, (344), 61 states have return successors, (380), 343 states have call predecessors, (380), 344 states have call successors, (380) [2024-11-27 23:30:59,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1657 transitions. [2024-11-27 23:30:59,677 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1657 transitions. Word has length 173 [2024-11-27 23:30:59,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:59,678 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1657 transitions. [2024-11-27 23:30:59,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-27 23:30:59,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1657 transitions. [2024-11-27 23:30:59,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-27 23:30:59,692 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:59,693 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:59,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:30:59,693 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:59,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:59,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1535826248, now seen corresponding path program 1 times [2024-11-27 23:30:59,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:59,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3597026] [2024-11-27 23:30:59,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:59,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:02,277 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2024-11-27 23:31:02,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:02,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3597026] [2024-11-27 23:31:02,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3597026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:02,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054472783] [2024-11-27 23:31:02,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:02,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:02,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:02,282 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:02,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:31:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:03,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-27 23:31:03,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:03,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-27 23:31:12,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:31:12,745 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:31:12,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 15 [2024-11-27 23:31:14,163 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2024-11-27 23:31:14,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-27 23:31:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 352 proven. 4 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2024-11-27 23:31:41,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:31:42,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-27 23:31:42,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-11-27 23:31:47,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054472783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:47,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:31:47,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 30 [2024-11-27 23:31:47,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276963315] [2024-11-27 23:31:47,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:31:47,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-27 23:31:47,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:47,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-27 23:31:47,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1065, Unknown=1, NotChecked=0, Total=1190 [2024-11-27 23:31:47,402 INFO L87 Difference]: Start difference. First operand 1034 states and 1657 transitions. Second operand has 30 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 28 states have internal predecessors, (106), 15 states have call successors, (50), 10 states have call predecessors, (50), 12 states have return successors, (50), 13 states have call predecessors, (50), 15 states have call successors, (50) [2024-11-27 23:31:51,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:31:56,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:31:57,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:32:00,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:32:06,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:32:10,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:32:14,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:32:45,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:45,033 INFO L93 Difference]: Finished difference Result 2099 states and 3382 transitions. [2024-11-27 23:32:45,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-27 23:32:45,034 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 28 states have internal predecessors, (106), 15 states have call successors, (50), 10 states have call predecessors, (50), 12 states have return successors, (50), 13 states have call predecessors, (50), 15 states have call successors, (50) Word has length 177 [2024-11-27 23:32:45,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:45,046 INFO L225 Difference]: With dead ends: 2099 [2024-11-27 23:32:45,046 INFO L226 Difference]: Without dead ends: 1109 [2024-11-27 23:32:45,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 285 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 47.6s TimeCoverageRelationStatistics Valid=623, Invalid=3282, Unknown=1, NotChecked=0, Total=3906 [2024-11-27 23:32:45,053 INFO L435 NwaCegarLoop]: 386 mSDtfsCounter, 2027 mSDsluCounter, 4107 mSDsCounter, 0 mSdLazyCounter, 5379 mSolverCounterSat, 1797 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2027 SdHoareTripleChecker+Valid, 4493 SdHoareTripleChecker+Invalid, 7181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1797 IncrementalHoareTripleChecker+Valid, 5379 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:45,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2027 Valid, 4493 Invalid, 7181 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1797 Valid, 5379 Invalid, 5 Unknown, 0 Unchecked, 52.0s Time] [2024-11-27 23:32:45,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2024-11-27 23:32:45,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1070. [2024-11-27 23:32:45,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 649 states have (on average 1.473035439137134) internal successors, (956), 667 states have internal predecessors, (956), 354 states have call successors, (354), 57 states have call predecessors, (354), 66 states have return successors, (415), 355 states have call predecessors, (415), 354 states have call successors, (415) [2024-11-27 23:32:45,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1725 transitions. [2024-11-27 23:32:45,263 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1725 transitions. Word has length 177 [2024-11-27 23:32:45,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:45,264 INFO L471 AbstractCegarLoop]: Abstraction has 1070 states and 1725 transitions. [2024-11-27 23:32:45,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 28 states have internal predecessors, (106), 15 states have call successors, (50), 10 states have call predecessors, (50), 12 states have return successors, (50), 13 states have call predecessors, (50), 15 states have call successors, (50) [2024-11-27 23:32:45,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1725 transitions. [2024-11-27 23:32:45,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-27 23:32:45,276 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:45,276 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 9, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:45,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:32:45,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:45,480 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:45,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:45,481 INFO L85 PathProgramCache]: Analyzing trace with hash -191456247, now seen corresponding path program 1 times [2024-11-27 23:32:45,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:45,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151703793] [2024-11-27 23:32:45,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:45,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:45,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1286 trivial. 0 not checked. [2024-11-27 23:32:45,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:45,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151703793] [2024-11-27 23:32:45,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151703793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:45,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:45,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:32:45,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117835923] [2024-11-27 23:32:45,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:45,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:32:45,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:45,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:32:45,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:32:45,890 INFO L87 Difference]: Start difference. First operand 1070 states and 1725 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (29), 1 states have call predecessors, (29), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-27 23:32:46,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:46,127 INFO L93 Difference]: Finished difference Result 2128 states and 3430 transitions. [2024-11-27 23:32:46,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:32:46,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (29), 1 states have call predecessors, (29), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 230 [2024-11-27 23:32:46,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:46,137 INFO L225 Difference]: With dead ends: 2128 [2024-11-27 23:32:46,137 INFO L226 Difference]: Without dead ends: 1082 [2024-11-27 23:32:46,143 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:32:46,143 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 0 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:46,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1007 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:32:46,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2024-11-27 23:32:46,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1082. [2024-11-27 23:32:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 661 states have (on average 1.4644478063540092) internal successors, (968), 679 states have internal predecessors, (968), 354 states have call successors, (354), 57 states have call predecessors, (354), 66 states have return successors, (415), 355 states have call predecessors, (415), 354 states have call successors, (415) [2024-11-27 23:32:46,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1737 transitions. [2024-11-27 23:32:46,309 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1737 transitions. Word has length 230 [2024-11-27 23:32:46,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:46,310 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1737 transitions. [2024-11-27 23:32:46,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (29), 1 states have call predecessors, (29), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-27 23:32:46,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1737 transitions. [2024-11-27 23:32:46,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-27 23:32:46,323 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:46,323 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 9, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:46,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:32:46,323 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:46,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:46,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1992964095, now seen corresponding path program 1 times [2024-11-27 23:32:46,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:46,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623752104] [2024-11-27 23:32:46,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:46,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1284 trivial. 0 not checked. [2024-11-27 23:32:47,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:47,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623752104] [2024-11-27 23:32:47,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623752104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:47,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23112689] [2024-11-27 23:32:47,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:47,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:47,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:47,159 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:47,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:32:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:47,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 1399 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-27 23:32:47,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:48,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 438 proven. 0 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2024-11-27 23:32:48,999 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:49,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23112689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:49,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:32:49,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2024-11-27 23:32:49,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503908510] [2024-11-27 23:32:49,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:49,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:32:49,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:49,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:32:49,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:32:49,003 INFO L87 Difference]: Start difference. First operand 1082 states and 1737 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 4 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2024-11-27 23:32:55,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:55,257 INFO L93 Difference]: Finished difference Result 2873 states and 4592 transitions. [2024-11-27 23:32:55,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:32:55,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 4 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 232 [2024-11-27 23:32:55,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:55,273 INFO L225 Difference]: With dead ends: 2873 [2024-11-27 23:32:55,274 INFO L226 Difference]: Without dead ends: 1805 [2024-11-27 23:32:55,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:32:55,283 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 399 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:55,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 668 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-27 23:32:55,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2024-11-27 23:32:55,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1770. [2024-11-27 23:32:55,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 1089 states have (on average 1.3921028466483012) internal successors, (1516), 1108 states have internal predecessors, (1516), 555 states have call successors, (555), 101 states have call predecessors, (555), 125 states have return successors, (708), 575 states have call predecessors, (708), 555 states have call successors, (708) [2024-11-27 23:32:55,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2779 transitions. [2024-11-27 23:32:55,634 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2779 transitions. Word has length 232 [2024-11-27 23:32:55,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:55,634 INFO L471 AbstractCegarLoop]: Abstraction has 1770 states and 2779 transitions. [2024-11-27 23:32:55,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 4 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2024-11-27 23:32:55,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2779 transitions. [2024-11-27 23:32:55,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-27 23:32:55,648 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:55,648 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 9, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:55,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:32:55,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:55,849 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:55,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:55,850 INFO L85 PathProgramCache]: Analyzing trace with hash 165499103, now seen corresponding path program 1 times [2024-11-27 23:32:55,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:55,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677665123] [2024-11-27 23:32:55,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:55,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:56,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1284 trivial. 0 not checked. [2024-11-27 23:32:56,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:56,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677665123] [2024-11-27 23:32:56,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677665123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:56,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974743865] [2024-11-27 23:32:56,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:56,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:56,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:56,609 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:56,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:32:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:57,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 23:32:57,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:57,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-27 23:32:57,435 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:32:57,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 7 [2024-11-27 23:32:57,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2024-11-27 23:32:57,635 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:57,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974743865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:57,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:32:57,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2024-11-27 23:32:57,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279676991] [2024-11-27 23:32:57,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:57,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:32:57,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:57,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:32:57,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:32:57,639 INFO L87 Difference]: Start difference. First operand 1770 states and 2779 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2024-11-27 23:32:59,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:33:03,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:33:06,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:33:06,383 INFO L93 Difference]: Finished difference Result 2202 states and 3355 transitions. [2024-11-27 23:33:06,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:33:06,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 233 [2024-11-27 23:33:06,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:33:06,395 INFO L225 Difference]: With dead ends: 2202 [2024-11-27 23:33:06,395 INFO L226 Difference]: Without dead ends: 1663 [2024-11-27 23:33:06,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:33:06,398 INFO L435 NwaCegarLoop]: 300 mSDtfsCounter, 450 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 271 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:33:06,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 835 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 505 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2024-11-27 23:33:06,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2024-11-27 23:33:06,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1659. [2024-11-27 23:33:06,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1018 states have (on average 1.381139489194499) internal successors, (1406), 1036 states have internal predecessors, (1406), 524 states have call successors, (524), 92 states have call predecessors, (524), 116 states have return successors, (668), 544 states have call predecessors, (668), 524 states have call successors, (668) [2024-11-27 23:33:06,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2598 transitions. [2024-11-27 23:33:06,743 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2598 transitions. Word has length 233 [2024-11-27 23:33:06,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:33:06,744 INFO L471 AbstractCegarLoop]: Abstraction has 1659 states and 2598 transitions. [2024-11-27 23:33:06,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2024-11-27 23:33:06,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2598 transitions. [2024-11-27 23:33:06,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-27 23:33:06,755 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:33:06,755 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 9, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:33:06,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 23:33:06,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 23:33:06,956 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:33:06,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:06,957 INFO L85 PathProgramCache]: Analyzing trace with hash -674928247, now seen corresponding path program 1 times [2024-11-27 23:33:06,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:33:06,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409204242] [2024-11-27 23:33:06,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:06,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:33:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1284 trivial. 0 not checked. [2024-11-27 23:33:07,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:33:07,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409204242] [2024-11-27 23:33:07,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409204242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:33:07,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639991210] [2024-11-27 23:33:07,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:07,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:33:07,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:33:07,820 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:33:07,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:33:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:08,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-27 23:33:08,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:33:08,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2024-11-27 23:33:08,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-27 23:33:09,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-27 23:33:11,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 5 [2024-11-27 23:33:13,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 5 [2024-11-27 23:33:13,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 5 [2024-11-27 23:33:14,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 5 [2024-11-27 23:33:15,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 5 [2024-11-27 23:33:16,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 5 [2024-11-27 23:33:16,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 674 proven. 61 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2024-11-27 23:33:16,856 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:33:19,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639991210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:33:19,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:33:19,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 23] total 27 [2024-11-27 23:33:19,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430772902] [2024-11-27 23:33:19,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:33:19,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-27 23:33:19,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:33:19,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-27 23:33:19,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=882, Unknown=3, NotChecked=0, Total=992 [2024-11-27 23:33:19,594 INFO L87 Difference]: Start difference. First operand 1659 states and 2598 transitions. Second operand has 27 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 14 states have call successors, (61), 9 states have call predecessors, (61), 11 states have return successors, (61), 15 states have call predecessors, (61), 14 states have call successors, (61) [2024-11-27 23:33:23,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:33:27,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:33:30,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:33:34,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:33:38,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:33:42,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:33:47,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:33:50,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:33:54,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:33:59,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:34:03,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:34:07,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:34:11,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:35:27,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:27,054 INFO L93 Difference]: Finished difference Result 5446 states and 8435 transitions. [2024-11-27 23:35:27,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2024-11-27 23:35:27,055 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 14 states have call successors, (61), 9 states have call predecessors, (61), 11 states have return successors, (61), 15 states have call predecessors, (61), 14 states have call successors, (61) Word has length 233 [2024-11-27 23:35:27,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:27,076 INFO L225 Difference]: With dead ends: 5446 [2024-11-27 23:35:27,076 INFO L226 Difference]: Without dead ends: 3361 [2024-11-27 23:35:27,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13786 ImplicationChecksByTransitivity, 38.3s TimeCoverageRelationStatistics Valid=3627, Invalid=31894, Unknown=11, NotChecked=0, Total=35532 [2024-11-27 23:35:27,091 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 3404 mSDsluCounter, 2585 mSDsCounter, 0 mSdLazyCounter, 7335 mSolverCounterSat, 3761 mSolverCounterUnsat, 84 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3418 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 11180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3761 IncrementalHoareTripleChecker+Valid, 7335 IncrementalHoareTripleChecker+Invalid, 84 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:27,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3418 Valid, 2849 Invalid, 11180 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3761 Valid, 7335 Invalid, 84 Unknown, 0 Unchecked, 91.9s Time] [2024-11-27 23:35:27,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3361 states. [2024-11-27 23:35:27,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3361 to 2906. [2024-11-27 23:35:27,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2906 states, 1808 states have (on average 1.3390486725663717) internal successors, (2421), 1883 states have internal predecessors, (2421), 904 states have call successors, (904), 138 states have call predecessors, (904), 193 states have return successors, (1234), 900 states have call predecessors, (1234), 904 states have call successors, (1234) [2024-11-27 23:35:27,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2906 states to 2906 states and 4559 transitions. [2024-11-27 23:35:27,881 INFO L78 Accepts]: Start accepts. Automaton has 2906 states and 4559 transitions. Word has length 233 [2024-11-27 23:35:27,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:27,882 INFO L471 AbstractCegarLoop]: Abstraction has 2906 states and 4559 transitions. [2024-11-27 23:35:27,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 14 states have call successors, (61), 9 states have call predecessors, (61), 11 states have return successors, (61), 15 states have call predecessors, (61), 14 states have call successors, (61) [2024-11-27 23:35:27,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2906 states and 4559 transitions. [2024-11-27 23:35:27,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-27 23:35:27,898 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:27,898 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:27,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 23:35:28,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:28,103 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:28,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:28,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1667836423, now seen corresponding path program 1 times [2024-11-27 23:35:28,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:28,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844176317] [2024-11-27 23:35:28,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:28,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:28,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1227 trivial. 0 not checked. [2024-11-27 23:35:28,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:28,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844176317] [2024-11-27 23:35:28,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844176317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:28,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:28,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:35:28,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877411698] [2024-11-27 23:35:28,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:28,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:35:28,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:28,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:35:28,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:35:28,471 INFO L87 Difference]: Start difference. First operand 2906 states and 4559 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-27 23:35:29,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:29,208 INFO L93 Difference]: Finished difference Result 4774 states and 7590 transitions. [2024-11-27 23:35:29,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:35:29,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 249 [2024-11-27 23:35:29,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:29,262 INFO L225 Difference]: With dead ends: 4774 [2024-11-27 23:35:29,262 INFO L226 Difference]: Without dead ends: 2916 [2024-11-27 23:35:29,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:35:29,335 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 0 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:29,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 676 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:35:29,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2024-11-27 23:35:30,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2912. [2024-11-27 23:35:30,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2912 states, 1814 states have (on average 1.336824696802646) internal successors, (2425), 1889 states have internal predecessors, (2425), 904 states have call successors, (904), 138 states have call predecessors, (904), 193 states have return successors, (1234), 900 states have call predecessors, (1234), 904 states have call successors, (1234) [2024-11-27 23:35:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 4563 transitions. [2024-11-27 23:35:30,138 INFO L78 Accepts]: Start accepts. Automaton has 2912 states and 4563 transitions. Word has length 249 [2024-11-27 23:35:30,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:30,139 INFO L471 AbstractCegarLoop]: Abstraction has 2912 states and 4563 transitions. [2024-11-27 23:35:30,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-27 23:35:30,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2912 states and 4563 transitions. [2024-11-27 23:35:30,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-27 23:35:30,153 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:30,153 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:30,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:35:30,154 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:30,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:30,154 INFO L85 PathProgramCache]: Analyzing trace with hash -933454822, now seen corresponding path program 1 times [2024-11-27 23:35:30,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:30,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988065521] [2024-11-27 23:35:30,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:30,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 1196 trivial. 0 not checked. [2024-11-27 23:35:33,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:33,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988065521] [2024-11-27 23:35:33,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988065521] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:35:33,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130808723] [2024-11-27 23:35:33,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:33,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:33,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:35:33,478 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:35:33,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:35:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:34,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 1968 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-27 23:35:34,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:35:34,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-27 23:35:34,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:35:34,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 7 [2024-11-27 23:35:35,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2024-11-27 23:35:35,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:35:35,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2024-11-27 23:35:35,494 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:35:35,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 7 [2024-11-27 23:35:35,743 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:35:35,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 7 [2024-11-27 23:35:36,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 504 proven. 39 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked. [2024-11-27 23:35:36,069 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:35:38,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130808723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:35:38,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:35:38,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2024-11-27 23:35:38,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410425621] [2024-11-27 23:35:38,189 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:35:38,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 23:35:38,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:38,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 23:35:38,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:35:38,191 INFO L87 Difference]: Start difference. First operand 2912 states and 4563 transitions. Second operand has 21 states, 18 states have (on average 6.0) internal successors, (108), 21 states have internal predecessors, (108), 15 states have call successors, (53), 6 states have call predecessors, (53), 8 states have return successors, (53), 12 states have call predecessors, (53), 15 states have call successors, (53) [2024-11-27 23:35:42,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:35:46,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:35:51,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:35:55,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:35:59,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:36:21,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:36:21,282 INFO L93 Difference]: Finished difference Result 5378 states and 8179 transitions. [2024-11-27 23:36:21,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-27 23:36:21,283 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 6.0) internal successors, (108), 21 states have internal predecessors, (108), 15 states have call successors, (53), 6 states have call predecessors, (53), 8 states have return successors, (53), 12 states have call predecessors, (53), 15 states have call successors, (53) Word has length 246 [2024-11-27 23:36:21,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:36:21,312 INFO L225 Difference]: With dead ends: 5378 [2024-11-27 23:36:21,312 INFO L226 Difference]: Without dead ends: 4290 [2024-11-27 23:36:21,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 441 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=603, Invalid=2589, Unknown=0, NotChecked=0, Total=3192 [2024-11-27 23:36:21,320 INFO L435 NwaCegarLoop]: 377 mSDtfsCounter, 2428 mSDsluCounter, 3348 mSDsCounter, 0 mSdLazyCounter, 3526 mSolverCounterSat, 1886 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2456 SdHoareTripleChecker+Valid, 3725 SdHoareTripleChecker+Invalid, 5417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1886 IncrementalHoareTripleChecker+Valid, 3526 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:36:21,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2456 Valid, 3725 Invalid, 5417 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1886 Valid, 3526 Invalid, 5 Unknown, 0 Unchecked, 38.4s Time] [2024-11-27 23:36:21,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4290 states. [2024-11-27 23:36:22,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4290 to 3850. [2024-11-27 23:36:22,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3850 states, 2364 states have (on average 1.3307952622673436) internal successors, (3146), 2479 states have internal predecessors, (3146), 1245 states have call successors, (1245), 169 states have call predecessors, (1245), 240 states have return successors, (1569), 1225 states have call predecessors, (1569), 1245 states have call successors, (1569) [2024-11-27 23:36:22,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 5960 transitions. [2024-11-27 23:36:22,466 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 5960 transitions. Word has length 246 [2024-11-27 23:36:22,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:36:22,467 INFO L471 AbstractCegarLoop]: Abstraction has 3850 states and 5960 transitions. [2024-11-27 23:36:22,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 6.0) internal successors, (108), 21 states have internal predecessors, (108), 15 states have call successors, (53), 6 states have call predecessors, (53), 8 states have return successors, (53), 12 states have call predecessors, (53), 15 states have call successors, (53) [2024-11-27 23:36:22,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 5960 transitions. [2024-11-27 23:36:22,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-27 23:36:22,484 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:36:22,484 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:36:22,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 23:36:22,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:36:22,686 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:36:22,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:36:22,686 INFO L85 PathProgramCache]: Analyzing trace with hash 280471663, now seen corresponding path program 1 times [2024-11-27 23:36:22,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:36:22,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479996618] [2024-11-27 23:36:22,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:36:22,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:36:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:36:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 835 trivial. 0 not checked. [2024-11-27 23:36:26,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:36:26,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479996618] [2024-11-27 23:36:26,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479996618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:36:26,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132143926] [2024-11-27 23:36:26,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:36:26,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:36:26,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:36:26,779 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:36:26,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:36:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:36:27,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-27 23:36:27,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:36:28,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 23:36:38,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:36:38,182 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:36:38,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 50 [2024-11-27 23:36:39,476 INFO L349 Elim1Store]: treesize reduction 58, result has 61.3 percent of original size [2024-11-27 23:36:39,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 122 [2024-11-27 23:36:46,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:36:46,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 29 [2024-11-27 23:36:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 390 proven. 75 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2024-11-27 23:36:46,607 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:36:48,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2024-11-27 23:36:48,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 134 [2024-11-27 23:36:50,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-27 23:36:50,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2024-11-27 23:36:50,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-27 23:36:50,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2024-11-27 23:36:52,022 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 835 trivial. 0 not checked. [2024-11-27 23:36:52,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132143926] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:36:52,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:36:52,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 14] total 41 [2024-11-27 23:36:52,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386725657] [2024-11-27 23:36:52,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:36:52,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-27 23:36:52,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:36:52,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-27 23:36:52,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1482, Unknown=3, NotChecked=0, Total=1640 [2024-11-27 23:36:52,027 INFO L87 Difference]: Start difference. First operand 3850 states and 5960 transitions. Second operand has 41 states, 37 states have (on average 3.972972972972973) internal successors, (147), 38 states have internal predecessors, (147), 20 states have call successors, (62), 12 states have call predecessors, (62), 15 states have return successors, (62), 18 states have call predecessors, (62), 20 states have call successors, (62) [2024-11-27 23:36:56,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:37:01,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:37:05,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:37:09,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:37:13,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-27 23:37:17,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:37:21,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:37:24,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:37:28,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:37:33,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:37:34,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:37:39,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:37:43,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:37:47,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:37:51,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:38:09,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:38:13,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:38:19,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:38:23,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:38:27,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:38:31,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:38:35,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:38:39,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:38:43,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:38:47,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:38:52,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:38:56,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:39:01,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:39:05,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:39:09,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:39:13,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:39:17,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:39:22,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:39:26,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:39:30,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:39:35,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:39:39,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:39:43,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:39:47,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:39:58,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:40:12,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:40:16,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:40:20,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:40:24,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:40:28,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:40:32,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:40:36,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:40:40,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:40:45,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:40:49,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:40:53,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:40:57,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:41:01,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:41:05,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:41:09,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:41:13,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:41:17,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:41:21,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:41:25,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:41:29,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:41:33,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:41:42,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:41:46,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:41:50,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:41:54,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:42:12,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:42:12,357 INFO L93 Difference]: Finished difference Result 6574 states and 9860 transitions. [2024-11-27 23:42:12,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-27 23:42:12,358 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 37 states have (on average 3.972972972972973) internal successors, (147), 38 states have internal predecessors, (147), 20 states have call successors, (62), 12 states have call predecessors, (62), 15 states have return successors, (62), 18 states have call predecessors, (62), 20 states have call successors, (62) Word has length 200 [2024-11-27 23:42:12,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:42:12,412 INFO L225 Difference]: With dead ends: 6574 [2024-11-27 23:42:12,416 INFO L226 Difference]: Without dead ends: 2380 [2024-11-27 23:42:12,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 377 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 41.5s TimeCoverageRelationStatistics Valid=830, Invalid=4275, Unknown=7, NotChecked=0, Total=5112 [2024-11-27 23:42:12,443 INFO L435 NwaCegarLoop]: 497 mSDtfsCounter, 3922 mSDsluCounter, 5952 mSDsCounter, 0 mSdLazyCounter, 7355 mSolverCounterSat, 3181 mSolverCounterUnsat, 61 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 293.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3922 SdHoareTripleChecker+Valid, 6449 SdHoareTripleChecker+Invalid, 10597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3181 IncrementalHoareTripleChecker+Valid, 7355 IncrementalHoareTripleChecker+Invalid, 61 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 295.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:42:12,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3922 Valid, 6449 Invalid, 10597 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3181 Valid, 7355 Invalid, 61 Unknown, 0 Unchecked, 295.9s Time] [2024-11-27 23:42:12,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2024-11-27 23:42:13,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2296. [2024-11-27 23:42:13,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2296 states, 1414 states have (on average 1.3635077793493635) internal successors, (1928), 1485 states have internal predecessors, (1928), 746 states have call successors, (746), 98 states have call predecessors, (746), 135 states have return successors, (923), 728 states have call predecessors, (923), 746 states have call successors, (923) [2024-11-27 23:42:13,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 3597 transitions. [2024-11-27 23:42:13,656 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 3597 transitions. Word has length 200 [2024-11-27 23:42:13,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:42:13,658 INFO L471 AbstractCegarLoop]: Abstraction has 2296 states and 3597 transitions. [2024-11-27 23:42:13,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 37 states have (on average 3.972972972972973) internal successors, (147), 38 states have internal predecessors, (147), 20 states have call successors, (62), 12 states have call predecessors, (62), 15 states have return successors, (62), 18 states have call predecessors, (62), 20 states have call successors, (62) [2024-11-27 23:42:13,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 3597 transitions. [2024-11-27 23:42:13,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-27 23:42:13,695 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:42:13,696 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:42:13,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-27 23:42:13,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:42:13,901 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:42:13,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:42:13,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1484560412, now seen corresponding path program 1 times [2024-11-27 23:42:13,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:42:13,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871001948] [2024-11-27 23:42:13,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:42:13,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:42:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:42:19,771 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2024-11-27 23:42:19,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:42:19,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871001948] [2024-11-27 23:42:19,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871001948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:42:19,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313710850] [2024-11-27 23:42:19,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:42:19,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:42:19,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:42:19,780 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:42:19,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:42:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:42:20,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-27 23:42:20,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:42:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 373 proven. 18 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2024-11-27 23:42:23,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:42:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 814 trivial. 0 not checked. [2024-11-27 23:42:28,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313710850] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 23:42:28,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:42:28,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 10] total 20 [2024-11-27 23:42:28,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145946343] [2024-11-27 23:42:28,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:42:28,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:42:28,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:42:28,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:42:28,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:42:28,800 INFO L87 Difference]: Start difference. First operand 2296 states and 3597 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2024-11-27 23:42:35,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:42:35,657 INFO L93 Difference]: Finished difference Result 5508 states and 8860 transitions. [2024-11-27 23:42:35,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:42:35,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 201 [2024-11-27 23:42:35,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:42:35,700 INFO L225 Difference]: With dead ends: 5508 [2024-11-27 23:42:35,700 INFO L226 Difference]: Without dead ends: 3347 [2024-11-27 23:42:35,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 396 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:42:35,719 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 651 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:42:35,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 603 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-27 23:42:35,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2024-11-27 23:42:37,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3236. [2024-11-27 23:42:37,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3236 states, 1948 states have (on average 1.4214579055441479) internal successors, (2769), 2023 states have internal predecessors, (2769), 1122 states have call successors, (1122), 146 states have call predecessors, (1122), 165 states have return successors, (1372), 1082 states have call predecessors, (1372), 1122 states have call successors, (1372) [2024-11-27 23:42:37,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3236 states to 3236 states and 5263 transitions. [2024-11-27 23:42:37,393 INFO L78 Accepts]: Start accepts. Automaton has 3236 states and 5263 transitions. Word has length 201 [2024-11-27 23:42:37,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:42:37,395 INFO L471 AbstractCegarLoop]: Abstraction has 3236 states and 5263 transitions. [2024-11-27 23:42:37,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2024-11-27 23:42:37,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3236 states and 5263 transitions. [2024-11-27 23:42:37,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-27 23:42:37,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:42:37,412 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:42:37,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 23:42:37,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 23:42:37,615 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:42:37,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:42:37,616 INFO L85 PathProgramCache]: Analyzing trace with hash -384842530, now seen corresponding path program 1 times [2024-11-27 23:42:37,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:42:37,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103582661] [2024-11-27 23:42:37,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:42:37,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:42:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:42:42,942 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 835 trivial. 0 not checked. [2024-11-27 23:42:42,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:42:42,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103582661] [2024-11-27 23:42:42,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103582661] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:42:42,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529304077] [2024-11-27 23:42:42,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:42:42,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:42:42,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:42:42,946 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:42:42,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0339f50-c1a1-4c2e-81fa-a51b3b99c1a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:42:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:42:43,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 1532 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 23:42:43,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:42:44,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2024-11-27 23:42:45,597 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-27 23:42:45,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 15 [2024-11-27 23:42:46,233 INFO L349 Elim1Store]: treesize reduction 47, result has 24.2 percent of original size [2024-11-27 23:42:46,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 19 [2024-11-27 23:42:47,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-27 23:42:48,521 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 391 proven. 53 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-27 23:42:48,521 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:42:50,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2024-11-27 23:42:50,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 74 [2024-11-27 23:42:51,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529304077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:42:51,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:42:51,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 29 [2024-11-27 23:42:51,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264862973] [2024-11-27 23:42:51,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:42:51,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-27 23:42:51,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:42:51,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-27 23:42:51,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=899, Unknown=0, NotChecked=0, Total=992 [2024-11-27 23:42:51,707 INFO L87 Difference]: Start difference. First operand 3236 states and 5263 transitions. Second operand has 29 states, 26 states have (on average 4.615384615384615) internal successors, (120), 28 states have internal predecessors, (120), 16 states have call successors, (53), 9 states have call predecessors, (53), 12 states have return successors, (53), 14 states have call predecessors, (53), 16 states have call successors, (53) [2024-11-27 23:42:56,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:43:00,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:43:08,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:43:12,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:43:16,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:43:20,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:43:24,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []